25AA256-I/SM Microchip Technology, 25AA256-I/SM Datasheet - Page 5

• Manufacturer Part Number: 25AA256-I/SM
• Description: IC EEPROM 256KBIT 10MHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 25AA256-I/SM

• Memory Size: 256K (32K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 10MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Memory Configuration: 32K X 8
• Ic Interface Type: Serial, SPI
• Clock Frequency: 10MHz
• Access Time: 50ns
• Supply Voltage Range: 1.8V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 1-1:
FIGURE 1-2:
FIGURE 1-3:
© 2007 Microchip Technology Inc.
SCK
CS
SO
SCK
SI
SO
CS
HOLD
SI
SCK
CS
SO
SI
Mode 1,1
Mode 0,0
HOLD TIMING
SERIAL INPUT TIMING
SERIAL OUTPUT TIMING
2
n + 2
n + 2
5
MSB out
MSB in
9
6
13
10
n + 1
16
n + 1
High-Impedance
Don’t Care
n
17
7
18
n
High-Impedance
Don’t Care
14
8
16
25AA256/25LC256
19
LSB in
17
3
n
n
5
ISB out
11
4
15
3
n - 1
12
DS21822F-page 5
n - 1
Mode 1,1
Mode 0,0